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York YCUL0072EE User Manual

York YCUL0072EE
178 pages
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Products are produced at a
f a c ilit y wh o s e qu a l i t y -
management systems are
ISO9001 certified.
R-410A
YCUL0020–YCUL0072
Air-Cooled Scroll Compressor Condensing Units
Style E (50 Hz and 60 Hz)
15 ton to 80 ton
50 kW to 280 kW
Air-Cooled Scroll
Compressor Condensing Units
Installation, Operation, and
Maintenance
Supersedes: 150.63-NM9 (1220) Form 150.63-NM9 (521)
Issue Date:
May 20, 2021
035-22896-000

Table of Contents

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York YCUL0072EE Specifications

General IconGeneral
BrandYork
ModelYCUL0072EE
CategoryHeat Pump
LanguageEnglish

Summary

Important Safety Information

General Safety Guidelines

Provides essential safety guidelines for handling the equipment, including potential hazards and responsibilities.

Safety Symbols

Explains the meaning of DANGER, CAUTION, WARNING, and NOTE symbols used to indicate hazards.

Section 1 – General Equipment Information and Safety

Warranty

Details the warranty coverage, limitations, and conditions for the equipment, including claim procedures.

Responsibility for Safety

Outlines the primary responsibility of the operator for personal safety, safety of others, and correct machinery use.

Misuse of Equipment

Discusses the suitability for application and restrictions on operating parameters to prevent damage or injury.

Section 2 – Product Description

Microcomputer Control Center

Describes the control center's NEMA 3R/12 cabinet, LCD display, keypad features, and input/output capabilities.

Product identification number (PIN)

Explains the structure and meaning of the model number and its various components for identification.

Refrigerant flow diagram

Illustrates the path of refrigerant through the unit's major components for operational understanding.

Section 3 – Handling and Storage

Unit Rigging

Provides instructions for safe rigging practices, emphasizing the use of spreader bars and proper lifting points.

Section 4 – Installation

Remote Emergency Cutoff

Explains how to achieve immediate unit shutdown by opening a field-installed dry contact.

Refrigerant Piping

Covers general considerations for connecting unit piping, including applicable guides and user responsibilities.

Refrigerant Charge

Details the process of charging the unit with refrigerant and the importance of adding sufficient charge before starting.

Single-point supply connection – terminal block, non-fused disconnect switch, or circuit breaker

Illustrates single-point supply connections and emphasizes verifying absence of lethal voltages before working.

Section 5 – Technical Data

Voltage Limitations

Specifies absolute voltage limitations that, if exceeded, can cause serious compressor damage.

Section 6 – Commissioning

EQUIPMENT PRE-STARTUP AND STARTUP CHECKLIST

A comprehensive checklist covering pre-startup checks, unit checks, compressor heaters, and panel checks.

D. CHECKING SUPERHEAT AND SUBCOOLING

Details how to calculate and adjust subcooling and check suction superheat for proper system operation.

Section 7 – Unit Controls

Section 8 – Unit Operation

Section 9 – Service and Troubleshooting

Service mode

Describes Service Mode for enabling/disabling outputs, changing configuration, and viewing inputs.

Troubleshooting

Provides a table of common problems, their causes, and solutions for efficient troubleshooting.

Section 10 – Maintenance

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